| 摘要 |
PROBLEM TO BE SOLVED: To prevent a relay corresponding to a power switch from switching on troublingly by noise on actuation of an electric household appliance, by reducing the number of operation detecting signal conductors for each switch below that of a static circuit. SOLUTION: This switch circuit for a dishwasher comprises a power relay 10 for power on-off control; relays 11 to 15 for respective power on-off control on a solenoid-operated feed valve 1, a heater 2, a washing pump 3, a drainage pump 4 and a fan 5 via the power relay 10; a power switch 16; control switches 17a to 17p; a display part 18; and a control part 19 for on-off control on the power relay 10 depending on an operation on the power switch 16, for on-off control on the relays 11 to 15 depending on an operation on the control switches 17a to 17p, and for display control via the display part 18 depending on the operating status. The operation detecting circuit for the power switch 16 consists of a static circuit, and the operation detecting circuit for the control switches 17a to 17p consists of a dynamic circuit.
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